EP2008880A1 - Multiadaptiver Airbag - Google Patents

Multiadaptiver Airbag Download PDF

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Publication number
EP2008880A1
EP2008880A1 EP07380194A EP07380194A EP2008880A1 EP 2008880 A1 EP2008880 A1 EP 2008880A1 EP 07380194 A EP07380194 A EP 07380194A EP 07380194 A EP07380194 A EP 07380194A EP 2008880 A1 EP2008880 A1 EP 2008880A1
Authority
EP
European Patent Office
Prior art keywords
bag
straps
occupant
airbag module
module according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07380194A
Other languages
English (en)
French (fr)
Inventor
Alfonso Busto García
Joana Francisca Tavares Da Silva Vinhas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dalphi Metal Espana SA
Original Assignee
Dalphi Metal Espana SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dalphi Metal Espana SA filed Critical Dalphi Metal Espana SA
Priority to EP07380194A priority Critical patent/EP2008880A1/de
Priority to US12/157,445 priority patent/US7878541B2/en
Publication of EP2008880A1 publication Critical patent/EP2008880A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/233—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • B60R2021/23382—Internal tether means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2342—Tear seams

Definitions

  • This invention refers to an airbag module for protecting a motor vehicle occupant, which can self-adapt to different the positions and sizes of the vehicle's occupant.
  • Airbag modules with dual operation are known in the above technique; i.e. airbag modules that can adopt two different states of operation from the characteristics of the vehicle's occupant when they are deployed in case of vehicle impact. For example, a first state with a small volume to protect passengers located in a forward position and a second state with a higher volume to protect passengers located in a back position.
  • the WO 2006/006904 patent application describes an airbag module with a double loading generator that allows the damage to be reduced that is suffered by a potentially incorrectly positioned occupant, through an active device that determines (non) activation of the second generator load based upon the degree of tension of a strap located between two opposite parts of the bag. If during its deployment, the bag quickly reaches the occupant, the strap does not tighten, and therefore the second load is not activated and consequently the bag remains in the first state. Otherwise, the strap tightens, which causes the activation of the second load, which allows the bag to reach the second state.
  • the US 6,808,205 patent describes an airbag module that incorporates a combination of fabric straps sewn at different locations of the bag, which allow a deployment that is differentiated into two states.
  • the US 7,111,871 patent describes an airbag module for protecting the vehicle occupant in case of a front impact, where the mentioned two states are achieved with a dual loading generator and a two-volume bag.
  • the first state is achieved by firing the first generator load, with which the bag deploys to a small volume, assisted by some moving straps inside the bag that hold it back.
  • the second state is achieved by firing the two generator loads, with which the bag is filled completely.
  • the straps move by pressure, allowing the bag to be inflated to a large volume.
  • the decision to fire one or both generator charges takes place on the basis of the values of pre-determined variables obtained through sensor devices. For example, this decision may be made depending on the seat's position, such that the small volume is deployed if the seat is in a more forward position and the large volume if the seat is in a halfway or back position.
  • One purpose of this invention is to provide an airbag module for an automobile capable of adapting to different positions and sizes of the occupant. Each size, occupant's position and type of impact, need a specific solution, the present invention allowing to provide a unique product adapted to each particular case.
  • Another purpose of this invention is to provide an airbag module for an automobile capable of achieving two or more bag deployment volumes, getting different energy absorptions during the occupant's load.
  • Another purpose of this invention is to provide an airbag module for an automobile that has a self-adaptive compartment based upon the position and size of the occupant without the need for any detection mechanism of these factors.
  • Another purpose of this invention is to provide an airbag module for an automobile that allows it to absorb the tolerances of other passive safety systems that may involve changes to the anticipated position of the occupant.
  • those systems it is worth mentioning the single frame programmed deformation, the seats, the seatbelts and the collapsible steering columns that may cause variations in the position of the occupant within a given adjustment range.
  • an airbag module to protect the automobile occupant, which includes an inflatable bag from the gas that is produced by a generator when a dangerous situation to the occupant is detected, which includes a number of internal straps with different lengths and with each having a predetermined resistance to traction, which are joined at their ends to two areas of the bag, limiting its deployment in the direction of the occupant.
  • the length and resistance to traction of these straps are calibrated so that they break in succession during the deployment of the bag until it reaches the occupant.
  • the bag is configured to protect the occupant from a front impact.
  • a self-adaptive airbag module is achieved for the driver or passenger.
  • the bag is configured to protect the occupant from a side impact.
  • a self-adaptive side airbag module is achieved.
  • straps are used with a weakened section for better control of the energy dissipated during their breaking.
  • an improved self-adaptive airbag module is achieved.
  • bag 11 of an airbag module incorporates three straps 15, 17 and 19 of different lengths, which are fixed on two areas 21 and 23 of the same bag, through fabric seams of variable configuration, a pressure-temperature setting or any other type of setting that is appropriate.
  • Figure 1a shows a first state of bag 11 deployment, where its volume is limited by strap 15 with the smallest length, which is stretched at its ends as a result of the internal pressure of bag 11 exercised by the gas provided by the generator.
  • the other straps 17 and 19, which are longer, are not under tension in this first state.
  • Figure 1b shows a second state of bag 11 deployment, where after breaking strap 15 with the smallest length, its volume is limited by strap 17 with an intermediate length, which is stretched at its ends. Strap 19, with the longest length, is not under tension in this second state.
  • Figure 1c shows a third state of bag 11 deployment, where after breaking strap 17 with the intermediate length, its volume is limited by strap 19 with a longer length.
  • the number of straps 15, 17 and 19, the location of their setting areas 21 and 23 to bag 11, as well as their geometry and mechanical properties, are the variables to be taken into consideration in order to predetermine the self-adaptive behaviour of the bag of the airbag module in question.
  • Another important characteristic of this invention is that the tearing away of straps 15, 17 and 19 constitutes an energy absorption mechanism that positively contributes to the self-adaptive behaviour of the bag.
  • the airbag module as per its invention, can be an airbag module for a front, oblique or side collision.
  • Figures 2a and 2b illustrate the deployment of a driver airbag module, and the limitation of bag deployment in the direction of the occupant can be observed, which is provided by straps 15, 17 and 19.
  • This invention is also applicable to passenger and side airbag modules. Upon viewing Figures 2a and 2b , an expert in this area will easily understand the application of the invention to these types of airbag modules.
  • the bag of the airbag modules is formed by two panels, one of the joined areas of straps 15, 17 and 19 will preferably be located in each of them.
  • fabric straps 15, 17 and 19 with appropriate mechanical characteristics are used, in particular the dtex No. and the direction of the warp and weft.
  • rectangular straps 15, 17 and 19 are used.
  • straps 15, 17 and 19 include a section 31, shown in Figure 3 , rectangular and width A with two measurements 33 and 35 of a triangular shape and depth of P, with axes displaced at a distance D, determining a reduced width area R on the straps.
  • section 31 allows the energy dissipated by straps 15, 17 and 19 to be controlled during their breaking.
  • 3 straps measuring 400, 450 and 500 mm in length and 100 mm in width will be used, each of them with two measurements 33 and 35 of a triangular shape and depth of 30 mm, with axes displaced at a distance of 80 mm.
  • straps 15, 17, 19 are used formed by two pieces joined by seams with determined characteristics of type of seam, type of thread and stitch density that allow pre determining their tensile strength and controlling the dissipated energy of the straps 15, 17, 19 during their breakage.
  • straps 15, 17 and 19 with the same characteristics are used, except for their length.
  • its resistance to traction will be the same and it will be selected based upon the change in the planned traction force during the deployment of bag 11.
  • the main advantage of this invention is that an airbag module is achieved that behaves by self-adaptation, by deploying the required bag volume from the position and size of the occupant.
  • Another advantage of this invention is that OOP ("Out of Position") behaviour of the airbag module is improved, since the breaking of the straps contributes to the absorption of the energy from the bag deployment, reducing damage to the occupant.
  • Another advantage of this invention is that the straps incorporated into the bag allow the direction and guidance of its deployment to be improved.
  • Another advantage of this invention is that the straps incorporated into the bag optimise the contact surface with the occupant.
  • Another advantage of this invention is that it allows the bag filling volume to be controlled without the need for using dual state generators.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)
EP07380194A 2007-06-29 2007-06-29 Multiadaptiver Airbag Withdrawn EP2008880A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP07380194A EP2008880A1 (de) 2007-06-29 2007-06-29 Multiadaptiver Airbag
US12/157,445 US7878541B2 (en) 2007-06-29 2008-06-10 Multi-adaptive airbag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07380194A EP2008880A1 (de) 2007-06-29 2007-06-29 Multiadaptiver Airbag

Publications (1)

Publication Number Publication Date
EP2008880A1 true EP2008880A1 (de) 2008-12-31

Family

ID=38692068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07380194A Withdrawn EP2008880A1 (de) 2007-06-29 2007-06-29 Multiadaptiver Airbag

Country Status (2)

Country Link
US (1) US7878541B2 (de)
EP (1) EP2008880A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202014105575U1 (de) 2013-11-21 2015-02-27 Takata AG Gassackanordnung für ein Fahrzeuginsassen-Rückhaltesystem
DE102010032016B4 (de) * 2010-07-23 2016-12-08 Autoliv Development Ab Gassack mit einem einteiligen, zwei Aufblasstufen definierenden Fangband
CN108136990A (zh) * 2015-10-16 2018-06-08 奥托里夫Asp股份有限公司 包括内部拴系件的安全气囊及其形成方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8047564B2 (en) * 2009-09-02 2011-11-01 Tk Holdings Inc. Airbag
CN103874607B (zh) 2011-10-14 2018-04-06 Tk控股公司 安全气囊模块
US10953833B2 (en) * 2019-04-09 2021-03-23 Ford Global Technologies, Llc Airbag with breakable band

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19506886A1 (de) * 1995-02-17 1996-08-22 Petri Ag Niederlassung Berlin Airbagmodul
DE29707162U1 (de) * 1997-04-14 1997-06-19 Petri Ag Gassack mit mindestens einem Fangband
WO2000041919A1 (en) * 1999-01-12 2000-07-20 Autoliv Development Ab An air-bag and a method of deploying an air-bag
GB2364674A (en) * 2000-07-12 2002-02-06 Autoliv Dev A vehicle air-bag arrangement in which the air-bag is deployed in front of and from above the occupant
US6808205B2 (en) 2002-12-02 2004-10-26 Delphi Technologies, Inc. Airbag module having variable tether system
WO2006006904A1 (en) 2004-07-13 2006-01-19 Autoliv Development Ab A safety arrangement comprising an inflatable element and a method of inflating an inflatable element
US7111871B2 (en) 2003-08-02 2006-09-26 General Motors Corporation Automotive vehicle air bag system

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JP3168591B2 (ja) * 1991-03-12 2001-05-21 トヨタ自動車株式会社 エアバッグ装置
US5249825A (en) * 1992-07-13 1993-10-05 General Motors Corporation Air bag with releasable tethers
DE4412829A1 (de) * 1993-04-17 1994-10-20 Phoenix Ag Aufprallschutzvorrichtung, insbesondere für Insassen von Fahrzeugen
JP3541471B2 (ja) * 1995-01-23 2004-07-14 タカタ株式会社 エアバッグ取付構造
US5639118A (en) * 1995-10-18 1997-06-17 General Motors Corporation Air bag module with inflation detection device
US5813696A (en) * 1996-10-28 1998-09-29 Trw Vehicle Safety Systems Inc. Air bag with tether
US5997037A (en) * 1997-09-22 1999-12-07 Trw Vehicle Safety Systems Inc. Air bag with tether
DE19813832C2 (de) * 1998-03-20 2003-10-23 Takata Petri Ag Gassack für ein Airbagmodul
US6254130B1 (en) * 1998-04-13 2001-07-03 Georgia Tech Research Corporation Method and apparatus for controlling air bag deployment
DE20102421U1 (de) * 2001-02-12 2001-06-13 Trw Repa Gmbh Gassack
US6616184B2 (en) * 2001-04-25 2003-09-09 Trw Vehicle Safety Systems Inc. Vehicle occupant protection apparatus with inflation volume and shape control
US7134691B2 (en) * 2001-05-23 2006-11-14 Delphi Technologies, Inc. Air bag cushion including break-away tethers
US7188862B2 (en) * 2004-03-17 2007-03-13 Delphi Technologies, Inc Apparatus and method for controlling an inflatable cushion
US7543848B2 (en) * 2002-02-20 2009-06-09 Delphi Technologies, Inc. Apparatus and method for controlling an inflatable cushion
DE10236859A1 (de) * 2002-08-07 2004-02-19 Takata Corp. Gassack für ein Airbagmodul
US6918614B2 (en) * 2002-09-05 2005-07-19 Delphi Technologies, Inc. Inflation assembly for variable profile air bag
US7021657B2 (en) * 2002-11-08 2006-04-04 Delphi Technologies, Inc. Air bag including variable tethers
US6932384B2 (en) * 2002-11-15 2005-08-23 Delphi Technologies, Inc. Apparatus and method for controlling an inflatable cushion
US7195281B2 (en) * 2003-12-11 2007-03-27 Autoliv Asp, Inc. Expansion-controlled joints in airbags for out-of-position occupants and cushion positioning
JP2005297715A (ja) * 2004-04-09 2005-10-27 Takata Corp エアバッグ及びエアバッグ装置
US7377548B2 (en) * 2005-05-06 2008-05-27 Tk Holdings Inc. Adaptive depth airbag
US7350807B2 (en) * 2005-05-25 2008-04-01 Autoliv Asp, Inc. Divided airbag system
US7552942B2 (en) * 2005-06-23 2009-06-30 Trw Vehicle Safety Systems Inc. Vehicle occupant protection apparatus having vent member that is controlled by a releasable tether
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US20080252054A1 (en) * 2007-04-16 2008-10-16 Hyundai Mobis Co., Ltd. Air bag cushion

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19506886A1 (de) * 1995-02-17 1996-08-22 Petri Ag Niederlassung Berlin Airbagmodul
DE29707162U1 (de) * 1997-04-14 1997-06-19 Petri Ag Gassack mit mindestens einem Fangband
WO2000041919A1 (en) * 1999-01-12 2000-07-20 Autoliv Development Ab An air-bag and a method of deploying an air-bag
GB2364674A (en) * 2000-07-12 2002-02-06 Autoliv Dev A vehicle air-bag arrangement in which the air-bag is deployed in front of and from above the occupant
US6808205B2 (en) 2002-12-02 2004-10-26 Delphi Technologies, Inc. Airbag module having variable tether system
US7111871B2 (en) 2003-08-02 2006-09-26 General Motors Corporation Automotive vehicle air bag system
WO2006006904A1 (en) 2004-07-13 2006-01-19 Autoliv Development Ab A safety arrangement comprising an inflatable element and a method of inflating an inflatable element

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010032016B4 (de) * 2010-07-23 2016-12-08 Autoliv Development Ab Gassack mit einem einteiligen, zwei Aufblasstufen definierenden Fangband
DE202014105575U1 (de) 2013-11-21 2015-02-27 Takata AG Gassackanordnung für ein Fahrzeuginsassen-Rückhaltesystem
CN108136990A (zh) * 2015-10-16 2018-06-08 奥托里夫Asp股份有限公司 包括内部拴系件的安全气囊及其形成方法
EP3362324A4 (de) * 2015-10-16 2019-06-12 Autoliv ASP, Inc. Airbags mit inneren anbindungen und verfahren zu deren herstellung

Also Published As

Publication number Publication date
US20090001696A1 (en) 2009-01-01
US7878541B2 (en) 2011-02-01

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